Sometimes it is better to keep maps on a different drive than the main system drive (C:\).
On my travel laptop/tablet, the integrated system drive only has about 45GB free after Windows is installed, but it also has a 500GB mechanical drive in the keyboard. Installing 5GB+ of maps on C: reduces my ability to install other programs, but D: is mostly empty.
My desktop PC came with a 256GB SSD for C:, and a 2TB mechanical D: drive for data. Again, I prefer to keep maps and other data on D: to leave more room on C: for applications. I also make daily image backups of C: as protection against viruses, which is quicker and takes less storage with less data on that drive.
The Garmin web site used to provide instructions to relocate the maps, but though my bookmarked link no longer works, I did keep my own instructions. Basically, you move the folder containing the map to a new location, create a shortcut to that location, and paste the shortcut back into the original map location. Basecamp will follow the shortcut to find the map.
- In File Explorer, click the View tab, check the Hidden Items box.
- Open C:\ProgramData\Garmin\Maps
- Select the City Navigator xxxxxx.gmap folder
- Browse to the desired alternate location. (D:\Garmin\Maps)
- Right-click a blank area in the folder
- Right-click the map folder, select Create Shortcut
- Right-click the new shortcut, select Cut
- Browse back to C:\ProgramData\Garmin\Maps (Back button on my mouse)
At one time you could choose an alternate map location in Express and Express would do all this automatically. Then there was a period when you could specify another folder, but then it was ignored. Recent versions of Express did not even provide the option to change the location. So I was glad that 7.26 let you specify a new folder, but again disappointed that my wishes were ignored.